living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Embryobionta Cronquist, Takht. & W.Zimm.
         Division Bryophyta A.Braun (1864) - mosses and liverworts see Phylum Bryophyta A.Braun (1864)
           Class Bryopsida McClatchie (1897) - mosses
             Subclass Polytrichidae see Class Polytrichopsida Doweld (2001)
               Family Polytrichaceae Schwägr.
                 Genus Polytrichum Hedw. (1801)
                   Polytrichum commune Hedw. (1801)